Of the three Ducks prospects who went to the World Junior Championships, Karlsson seems to have had the most impact on his clubs since returning. In the five games since coming back from Russia, Karlsson has earned points in four of those games. His overall stats since returning: 5 GP, 6 A, even rating and 2 PIMs, which includes a three assist performance in a 6-2 win over Brynäs IF.